The invention discloses a
LiDAR-4D
radar 3D target detection method based on dynamic denoising and dual-domain gating fusion, and the method achieves the robust 3D target detection in
severe weather through the three steps: dynamic denoising, adaptive fusion, and precise detection. According to the method, a semantic guidance mechanism is introduced into a
feature extraction layer, the
perception ability of the network to foreground target points and the inhibition ability of the network to
background noise points are enhanced, and meanwhile, the denoising threshold value can be dynamically adjusted by integrating the real-time
point cloud density and weather category information through a denoising strategy of the denoising threshold value self-adaptive to environment change, so that the real-time
point cloud density and the weather category information can be dynamically adjusted. Therefore, the balance between
noise suppression and foreground point reservation is realized under different complex weather conditions, the fusion weight of the
laser radar and 4D
radar modality can be adaptively adjusted explicitly according to the real-time
weather condition through a double-domain gating mechanism fusing external weather
perception information, the
perception ability of
feature fusion to the external environment is enhanced, and the real-time weather perception information is obtained. And the rationality of the fusion strategy and the overall robustness are improved.